Transformation of α,β-Epoxyesters into 2,3-Dideuterioesters Promoted by Samarium Diiodide
作者:José M. Concellón、Eva Bardales、Ricardo Llavona
DOI:10.1021/jo026043a
日期:2003.2.1
An easy and general sequenced elimination/reduction process by means of samariumdiiodide, in the presence of D(2)O, provides an efficient method for synthesizing 2,3-dideuterioesters 2. The reaction can be also carried out in the presence of H(2)O instead of D(2)O, yielding the corresponding saturated esters 4. Other deuterated esters have been also obtained. A mechanism to explain this synthesis
A synthetically benign deuterium atom transfer (DAT) deuteration of electron-deficient alkenes has been achieved. This DAT protocol realized higher functional group (FG) tolerance and chemoselectivity than the existing method, and allowed access to complex deuterated compounds including a heavy drug and deuterium-labeled amino acids.
已经实现了缺电子烯烃的合成良性氘原子转移 (DAT) 氘化。该 DAT 协议实现了比现有方法更高的官能团 (FG) 耐受性和化学选择性,并允许获得复杂的氘化化合物,包括重药物和氘标记的氨基酸。
Synthesis of 2,3-dideuterioesters from 2-halo-3-hydroxyesters by using metallic samarium and diiodomethane
作者:José M Concellón、Mónica Huerta
DOI:10.1016/s0040-4039(02)00950-4
日期:2002.7
2,3-Dideuterioesters are obtained in high yield from 2-chloro-3-hydroxyesters by a sequenced elimination;reduction process promoted by samarium diiodide generated in situ from metallic samarium and diiodomethane. (C) 2002 Elsevier Science Ltd. All rights reserved.